{"ID":2824745,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2512.22441","arxiv_id":"2512.22441","title":"LECalib: Line-Based Event Camera Calibration","abstract":"Camera calibration is an essential prerequisite for event-based vision applications. Current event camera calibration methods typically involve using flashing patterns, reconstructing intensity images, and utilizing the features extracted from events. Existing methods are generally time-consuming and require manually placed calibration objects, which cannot meet the needs of rapidly changing scenarios. In this paper, we propose a line-based event camera calibration framework exploiting the geometric lines of commonly-encountered objects in man-made environments, e.g., doors, windows, boxes, etc. Different from previous methods, our method detects lines directly from event streams and leverages an event-line calibration model to generate the initial guess of camera parameters, which is suitable for both planar and non-planar lines. Then, a non-linear optimization is adopted to refine camera parameters. Both simulation and real-world experiments have demonstrated the feasibility and accuracy of our method, with validation performed on monocular and stereo event cameras. The source code is released at https://github.com/Zibin6/line_based_event_camera_calib.","short_abstract":"Camera calibration is an essential prerequisite for event-based vision applications. Current event camera calibration methods typically involve using flashing patterns, reconstructing intensity images, and utilizing the features extracted from events. Existing methods are generally time-consuming and require manually p...","url_abs":"https://arxiv.org/abs/2512.22441","url_pdf":"https://arxiv.org/pdf/2512.22441v1","authors":"[\"Zibin Liu\",\"Banglei Guan\",\"Yang Shang\",\"Zhenbao Yu\",\"Yifei Bian\",\"Qifeng Yu\"]","published":"2025-12-27T02:30:51Z","proceeding":"cs.CV","tasks":"[\"cs.CV\"]","methods":"[]","has_code":false,"code_links":[{"ID":605608,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_id":2824745,"paper_url":"https://arxiv.org/abs/2512.22441","paper_title":"LECalib: Line-Based Event Camera Calibration","repo_url":"https://github.com/Zibin6/line_based_event_camera_calib","is_official":false,"mentioned_in_paper":false,"mentioned_in_github":true,"github_stars":0}]}